One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,6,4,8)(9,10)(11,13)(12,14)(15,16)(17,18,23,26)(19,27,30,32)(20,25,22,21)(24,31,29,28)(1,3,5,4)(2,6,7,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,28)(21,27)(22,31)(23,30)(25,32)(26,29)(2,7)(6,8)(9,11,12,16)(10,13,14,15)(17,20,23,22)(18,25,26,21)(19,28,30,31)(24,32,29,27)(1,4,5,3)(2,8,7,6)(11,16)(13,15)(17,21)(18,20)(19,29)(22,26)(23,25)(24,30)(27,28)(31,32)(10,14)(13,15)(17,20,23,22)(18,25,26,21)(19,28,30,31)(24,32,29,27)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.